<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>登陆页面</h1>
<div>
    <input type="text" placeholder="用户名" v-model="user.username">
    <input type="text" placeholder="密码" v-model="user.password">
    <input type="button" value="登录" @click="login()">
</div>
<!--引入Vue框架-->
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script>
    let v = new Vue({
                el:"div",
                data:{
                    user:{
                        username:"",
                        password:""
                    }
                },
                methods:{
                    login(){
                        axios.post("/login",v.user).then(function (response) {
                           /* if (response.data==1){
                                alert("登陆成功");
                                location.href="/";  //返回首页
                            }else if (response.data==2){
                                alert("用户名不存在");
                            }else {
                                alert("密码错误");
                            }*/
                            switch (response.data) {
                                case 1:
                                    alert("登陆成功");
                                    location.href="/";  //返回首页
                                    break;
                                case 2:
                                    alert("用户名不存在");
                                    break;
                                case 3:
                                    alert("密码错误");
                                    break;
                            }
                        })
                    }
                }
            })
</script>
</body>
</html>